Figure 1
From: Compact all-optical precision-tunable narrowband hard Compton X-ray source
Schematic overview of the active plasma lens-tunable X-ray source. (a) A laser beam is focussed into a plasma source, generating an electron bunch. The electron bunch is captured and refocussed chromatically using an active plasma lens and interacts with a focussed scattering laser (potentially from a different, synchronised laser system) at a plane \(z_f\), generating X-rays via ICS. The electron bunch is deflected with a dipole magnet, leaving the X-ray beam. (b) Trajectories of electrons with different energies being focussed by an active plasma lens, highlighting the chromaticity of the focussing. (c) The energy-dependence of RMS electron spot size at \(z_f\). (d) The filtering response function Eq. (2) as a function of electron energy. The trajectories are calculated with lens current \(I_{APL}={500}\,{\hbox {A}}\).
